package com.hzx.until;

import java.util.HashMap;
import java.util.Map;

public class SessionUntil {

    private static Map<Integer,Long> map = new HashMap<>() ;

    private SessionUntil(){
        //工具类
    }

    public static void saveSession(int uid){
        map.put(uid,System.currentTimeMillis()) ;
    }
}
